System for braking movable platforms.



c. 0,. DE MOOOMBLE. SYSTEM FOR BRAKING MOVABLE PLATFORM$.

APPLICATION FILED 10110.22, 1906. 934,085.

2 SHEETS- 8KB 1.

1 H manta) Patented Sept. 14. 1909.

ANDREW. s. GRAHAM c0" PHOTQ-LITNDGMPHERQ. wnsmrma. u. a

G. C. DE MOGOMBLE. SYSTEM FOR BRAKING MOVABLE PLATFORMS.

I APPLICATION FILED D110. 22, 1906.

Patented Sept. 14. 1909.

2 SHEETS-SHEET 2.

Jada/ 2507 C'M/ kd c2 5 flzacomble.

Z Wham A CHARLES CAVELIER DE MOCOMBLE, OF PARIS, FRANCE.

SYSTEM FOR BRAKING MOVABLE PLATFORMS.

Specification of Letters Patent.

Patented Sept. 14, 19629.

Application filed December 22, 1906. Serial No. 349,158.

To all whom it may concern:

Be it known that I, CHARLES CAVELIER DE Mooonnrn, citizen of France, residing at Paris, in the said Republic, have invented new and useful Improvements in Systems The wheels are established in a stationary Way at a certain distance from each other and they are actuated by motors. The whole of the motor-system is erected in such a manner that it may oscillate around a horizontal axis in such a manner as to be able to press more or less upon the aforenamed rails.

The present invention has for its object to arrest the movement of the platform in case some obstacle stands in the way of its functions. For this purpose the corresponding preparatory means is arranged in such a way as to suppress, at first, the feeding of the currentto the electric motors, then to set the brakes on the movable parts (rails) of the platform with the object of braking the motor-force and of slackening the live power of the parts in motion. To obtain this result, the invention is to establish, in each of the derivations of the principal circuit feed ing each of the motors, an interrupter automatically actuated at the moment when the accident occurs and cutting off the feeding current of the motor, while the said dynamos then continue to, run for a certain length of time under the action of the inertia of the platform which now carries them along instead of being carried along by them, and furnishing during this period of time the current which excites the elements of the brake-device.

The invention is illustrated in the accompanying drawings in which:

Figures 1 and 2 are diagrammatical views showing, respectively, the system during the normal working and during the braking. The Fig. 3 is a plan View of the main driver and of the wheels corresponding respectively to the high and to the low speed, the whole combined with electro-magnetic braking devices. The Figs. 4 and 5 are respectively, front and side elevations, showing said main driver combined with the bed of median speed. The Figs. 67 and 89 are views corresponding to Figs. l and5 of the driving friction wheels, combined respectively with the beds of high'and of low speeds. Fig. 10 is a detail View showing a device constituting an elasting coupling bet-ween the driving wheels and the frame work of the system. Figs. 11 and 12 are views showing the supports fixed on the frame work of the trucks of the system.

Similar references designate similar elements in the several figures of the drawings.

In order to actuate the rails carried by the truck-structures the rollers 1 are used which are operated by the motors M which are set up parallel, as indicated by Figs. 1 and 2 on the principal circuit A, and that by means of the interrupter-s I.,.

If the movement of the whole sustains damage, then the interrupter I takes up the position of I,, as will be explained hereinafter: in this position the feeding-current of the motor M is suppressed. But the motor carried along by the live impetus of the platform continues to run as a generator; the in terrupter I then occupies such a position that the produced current passes through the circuit B. This clrcult comes trom the dynamo M and returns to it by the inter rupter I, by the resistance R (which may be regulated) and by the spool R of the electro-magnet 2. The latter is placed exactly beneath the rail 6 fastened to the plat form and thus exerts an attractive influence upon the latter, an influence the value of which may be varied at will by the regulat1on of the resistance R.

For the automatic management of the interrupter I the following device is used: The interrupter I is subjected to the action of a spring 1", which pulls this interrupter to the position convenient (Fig. 2) for closing the circuit B when the solenoid S 18 no longer energized. In order to cause the energization of this solenoid to stop at the de sired moment, there is placed in the circuit C an interrupter I which is normally closed, but which opens when a solenoid S is on ergized. The solenoid is placed in a circuit D set up parallel with the conductor A. On the other side the said circuit is connected with the insulated conductor D which ex- 'gized and the interrupter I, remains closed.

their vertices upon a plate question remain unchangeable as to form.

' such; conditions of arrangement, one of the tobe grounded, and,in thismanner, perform the circuit D terminate at the positive con-- tween the conductor 1 and the earth, the

screw 92%;, n, 0, 29 which makes it possible to regulate the distance separating its sides ground the conductor D tends throughout the entire length of the l platform. Normally the two extremities of ductor and are consequently at the same potentlal, no current therefore passes in this circuit, the electro-magnet S is not ener- When however, owing to; an abnormal displacement of one of the trucks, the conductor DP comes, intocontact .with some one of the parts of the parallelograms m, n, 0,. p, the conductor is earthed and consequently the Sameis the case with circuit D current'then passes through this latter owing to the difference of potential existing beeleetro-magnet is energized, and the interrupter I opened. j The devices mentioned above. may be established by means of an articulated polygon, in the form of a parallelogram or pentagon (Figs. 11 and 12) in such a manner that, in the planes.mn and 0-49, the liberty necessary for the play of the springs and the flexibility of the hanging devices of the trucks may be obtained. This arrangement presents the advantage of enabling a practical adjustment on the spot, the adjustment obtained, the articulations are fixed in position by means of suitable fastening devices. These polygons are fastened byone or two of a which is itself secured by pins 6 and 0 upon the member b secured to. the movable. rail 6. Each of the vertices of these polygon-s bears a nut of a from.- the conductor DP, at the moment when the device is being installed. After this regulation has once been made, the polygons in It, is easyto understand, then, that if, under trucks. of the pla-t'liorm happens tofbecoine. subject to an abnormal displacement, the result will be that the three polygons borne by this truck and by the two neighboring trucks are no longer arranged in a line parallel to the axis of the traclgrand that one of the sides of these polygons will meet with the conductor D thereby causing the latter the brake-action, as above described. The previous regulation of the sides, of the polygons by means of the screw-nuts m, n, 0, 29 has the; aim to determine the amplitude of the aforesaid displacement, necessary to In. Figs. 34) is indicated by way of ex-' ample the application of the improved system in question to the friction mechanism described in my Letters Patent #633,881.

In order to apply the braking device specified above each of the driving rollers 1 is port 3 presentsat-its upper part a -in rod 8 whichbears against either the The I ;being excited, the shoes aldhereto the mov- 1 able rails, with anintensity'which maybe 5 always regulated as desired, by means which Q consists, in placing inthe circuit B, indicated by the lines -.-.f.. a suitablerefl ;sistance R, which may be graduatediby, means of suitable plates. fort, is therefore immediately transmitted to the connecting rods and the frame-work, without shocks, and without afl'ectingythe casting frame of the mechanisms Onthes other hand, lsures an instantaneoi'is workingoflthe brake, 5 as such'is the object of any braking device i iwhich mustact in the case of danger or accident. If, however, it is desirable to 0bprovided with an electronagnet 2, serving as a bralre'sh'oe acting respectiveiyhpoa each of the movable rails 6. The said shoe 2 is established on a special support 3, ar- Y frame 4, The supsl-ide 5, in .Tlie said? ranged in the frontof the cast which: supports the driving roller.

which the brake shoe rests freely.

. shoe is provided, in each of; its ends, ,with' a stud 7, acting by traction upona 'connec'thanoing axle 9 (Figs. 4%, 5,18, 9) or an inde pendent axle 10 (Figs;.3, 6', 7 1. s

Th braking device beingthus constituted, it obvious that upon the electro-magnet thesystem above specified. inT

: tainaprog-resslve braking, in. state of "trans-- ;1nitting the eifort either to the fixed. point or to the framework through rigid Icon-. f

6 pieces, itis sufiicient tointercal'ate 1 V work, an elastic coupling devicer Forthis;

necti-ng I between the connecting rods and the frame purpose, itis sufficient (Fig. 10), wj pintogether the two connecting rods 8 by means ofa cross-bar 11 having an eye and receiving being fixedon a flat spring 13" whichisfi xed its extremitiesonthe frame-workbf the a bolt 12- provided with a strap, .s'aidstrap.

system. Under these conditions, the shoe '2 which sets itself at first uponftherail;(twill not directly, with allits force of adherence, rub upon the latter,but it will, on the con trary, be dragged on by'it to ajsmall extent, this being due to the elasticity ofthe. spring 18, which. permits of this very, slight drag ging on of the shoe 2. As soon as. the tension of the said spring (which is caused thereby) has: become superior to the: ad-

herence of the shoe, the latter will act upon v the rail as if the spring '13 were a fixed point, since it does not permit the said shoe to be dragged on by the rail, and then the;

braking by friction. takes place justas'be;

It is obvious that-in this latter ease,

fore. it is necessary to provide on thesupport a free space necessary for the course ofthe' shoe, and that the studs of the connecting rods would be disposed at the upper part of the shoe, above the slide. V

The two. modifications above specified may be indifferently applied to friction driving mechanism for movable platforms indicated in the drawings; they are equally efficient, the first being only more rapid.

From the above specification, it results that, in normal working, the friction driving wheels serve also to produce the stop by borrowing from the platform, during its motion, the energy necessary for the dynamo exciting the electro-magnets.

What I do claim as my invention and desire to secure by Letters Patent, is:

A device for the purpose of arresting the movement of movable platforms when some obstacle stands in the way of their functions, comprising a motor, interrupters I I ,a solenoid S normally actuating said interrupter I to close the motor circuit, a solenoid S which becomes energized in case of accident,

and then actuates the interrupter L which cuts off the circuit of the solenoid S thus 20 solenoid, already closed by the interrupter 2 1,, of an electromagnet whose vertebrated core presses against the rail of the platform and there causes a braking-friction.

In testimony whereof I have signed my name to this specification in the presence of 0 two subscribing Witnesses.

CHARLES CAVELIER DE MOOOMBLE.

\Vitnesses:

JULEs FAYoLLE'r, EUGENE PIOHON. 

